gearing?

[squizzleboy]

can somebody please explain to me what different gearings give you quiker acceleration or faster top speed.(more teeth in front or more in back) i am really confused

[KTM250rm393]

Gearing 101,

If you increase the number of teeth on the front sprocket, you will gain speed but will lose power.

If you decrease the front sprocket by one tooth, which equals to the same as increasing the rear sprocket from 2-3 teeth, you will lose some topend speed but you will get quicker acceleration and increase in power.

The rule of thumb is to never decrease your front sprocket more than one tooth from factory. As you decrease the front sprocket, you increase the radius curveture the chain has to bend which increase chain wear and chain breakage and also causes more wear on your chain buffer on your swingarm because the chain is running longer on your buffer rather before the front sprocket picks it up.

Also if you go more than 3 teeth on the rear, make sure your chain guide doesn't get in the way

[madcow393]

good job rick. oh and to help out with this,

squizzleboy-
the reason the way you change gearing to achieve your effect in front or back has to do with gear ratios. if you have two gears, with one turning the other, then the driving gear(the one doing the turning) will apply force on the driven gear(the one being turned). The whole reason for gears is that they multiply force like a lever. so if you have a driving gear with (and this is an example) 1tooth turning a gear with 2teeth then the force of the driven gear is now multiplied by 2. so if you increase the difference in teeth between the two gears you gain more torqe but it requires more rotation. and vise versa going the other way. this is how you can have bikes with secong gear being too low and third too high. it's because the gear sets in the transmission are at innopropriate ratios.

[squizzleboy]

thanks that really helped